A high-resolution silicon-on-insulator arrayed waveguide grating microspectrometer with sub-micrometer aperture waveguides Academic Article uri icon

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abstract

  • We demonstrate a 50-channel high-resolution arrayed waveguide grating microspectrometer with a 0.2 nm channel spacing on a silicon-on-insulator (SOI) platform. The chip size is 8 mm x 8 mm. High channel density and spectral resolution are achieved using high aspect ratio 0.6 mum x 1.5 mum waveguide apertures to inject the light into the input combiner and to intercept different spectral channels at the output combiner focal region. The measured crosstalk is <-10 dB, the 3 dB channel bandwidth is 0.15 nm, and the insertion loss is -17 dB near the central wavelength of lambda = 1.545 mum.

authors

  • Cheben, Pavel
  • Schmid, JH
  • Delâge, A
  • Densmore, A
  • Janz, S
  • Lamontagne, B
  • Lapointe, J
  • Post, E
  • Waldron, P
  • Xu, D-X

publication date

  • 2007